7.5

CVE-2021-46763: amd 2nd gen amd epyc™ Out-of-bounds Write

CVSS: 7.5v3.1HighModified
Published 09-05-2023Last modified 28-01-2025
Open JSON

Vulnerability summary

CVE-2021-46763 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in amd 2nd gen amd epyc™. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-05-2023
    PublishedVulnerability first disclosed.
  2. 28-01-2025
    Last modifiedVulnerability information updated.

Description

Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer potentially leading to a loss of integrity.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Amd50 products

1 vendor · 50 products

References

1 links